var target;
var pop_top;
var pop_left;
var cal_Day;

var calObj;

var ie4 = document.all;
var ns6 = document.getElementById &&! document.all;
var ns4 = document.layers;

var selYear =  new Number();
var selMonth =  new Number();
var selDay =  new Number();

// 10보자 작은 숫자를 2자리 문자열로 변경(ex: 1 --> "01", 9 --> "09")
function fnDayString(d) {
    var str = new String();

    if (parseInt(d) < 10) {
        str = "0" + parseInt(d);
    }
    else {
        str = "" + parseInt(d)
    }

    return str;
}

function AppendCalendarDIV()
{
    $("body").append("<div id='divCalendarPosition' oncontextmenu='return false' ondragstart='return false' onselectstart='return false'></div>");
}


function InitCalendar(obj)
{
    // 선택된 값 초기화

    selYear = 0;
    selMonth = 0;
    selDay = 0;

    target = obj;
	var now = obj.value.split("-");

	// 선택된 값 설정
	if (now.length == 3)
	{
	    // 넘어온 값을 년월일로 분리
	    selYear = now[0];
        selMonth = now[1];
        selDay = now[2];
	}
}


// 팝업형식 달력
function Calendar_Day(targetObj)
{
    AppendCalendarDIV();

    InitCalendar(targetObj);

    // 위치 및 Display 설정
    pop_top = document.body.clientTop + GetObjectTop(targetObj) - document.body.scrollTop + target.offsetHeight+30;
	pop_left = document.body.clientLeft + GetObjectLeft(targetObj) -  document.body.scrollLeft;
	//pop_left = document.body.clientLeft + obj.offsetLeft -  document.body.scrollLeft;// 마스터 페이지 사용시...


	//calObj = ie4 ? document.all.divCalendarPosition : ns6? document.getElementById("divCalendarPosition") : ns4? document.divCalendarPosition : ""
	calObj = $("#divCalendarPosition")[0];
	calObj.style.position = "absolute";
	calObj.style.top = pop_top+"px";
	calObj.style.left = pop_left+"px";
	calObj.style.display = (calObj.style.display == "block") ? "none" : "block";

	// 달력 Show
	Show_Calendar_PopUp(selYear,selMonth,selDay);
}


// 날자를 선택하였을 경우
function doClick(selDate)
{
    // 날자 값이있으면
	if (selDate.length > 7)
	{
		target.value = selDate;
	}
	else
	{
	    alert('날짜설정중 오류발생!');
	}

	doHide();
}

// 화면에서 숨김
function doHide()
{
    calObj.style.display='none';
}

// 일별 달력 설정
function Show_Calendar_PopUp(sYear, sMonth, sDay)
{
    // 초기화

    calObj.innerHTML = "";

	var Months_day = new Array(0,31,28,31,30,31,30,31,31,30,31,30,31)
	var Weekday_name = new Array("일", "월", "화", "수", "목", "금", "토");
	var intThisYear = new Number(), intThisMonth = new Number(), intThisDay = new Number();


	// 현재날짜 초기화

	datToday = new Date();													    // 현재 날자 설정
	NowThisYear = datToday.getFullYear();										// 현재 년

	NowThisMonth = datToday.getMonth()+1;										// 현재 월(월 값은 실제값 보다 -1 한 값)
	NowThisDay = datToday.getDate();											// 현재 일


	// 선택된 날짜 초기화

	intThisYear = parseInt(sYear);
	intThisMonth = parseInt(sMonth);
	intThisDay = parseInt(sDay);

	if (intThisYear == 0)
	    intThisYear = NowThisYear;

	if (intThisMonth == 0)
	    intThisMonth = NowThisMonth;

	if (intThisDay == 0)
	    intThisDay = NowThisDay;

	switch(intThisMonth)
	{
		case 1:
				intPrevYear = intThisYear -1;
				intPrevMonth = 12;
				intNextYear = intThisYear;
				intNextMonth = 2;
				break;
		case 12:
				intPrevYear = intThisYear;
				intPrevMonth = 11;
				intNextYear = intThisYear + 1;
				intNextMonth = 1;
				break;
		default:
				intPrevYear = intThisYear;
				intPrevMonth = parseInt(intThisMonth) - 1;
				intNextYear = intThisYear;
				intNextMonth = parseInt(intThisMonth) + 1;
				break;
	}


	datFirstDay = new Date(intThisYear, intThisMonth-1, 1);						// 현재 달의 1일로 날자 객체 생성(월은 0부터 11까지의 정수(1월부터 12월))
	intFirstWeekday = datFirstDay.getDay();										// 현재 달 1일의 요일을 구함 (0:일요일, 1:월요일)

	intSecondWeekday = intFirstWeekday;
	intThirdWeekday = intFirstWeekday;

	datThisDay = new Date(intThisYear, intThisMonth, intThisDay);				// 넘어온 값의 날자 생성
	intThisWeekday = datThisDay.getDay();										// 넘어온 날자의 주 요일

	varThisWeekday = Weekday_name[intThisWeekday];								// 현재 요일 저장


	intPrintDay = 1																// 달의 시작 일자
	secondPrintDay = 1
	thirdPrintDay = 1

	Stop_Flag = 0

	// 윤년계산
	// 4년마다 1번이면 (사로나누어 떨어지면)
	if ((intThisYear % 4)==0)
	{
		if ((intThisYear % 100) == 0)
		{
			if ((intThisYear % 400) == 0)
			{
				Months_day[2] = 29;
			}
		}
		else
		{
			Months_day[2] = 29;
		}
	}

	intLastDay = Months_day[intThisMonth];										// 마지막 일자 구함
	Stop_flag = 0;
	intPrevYear2 = parseInt(intPrevYear) - 1;
	intNextYear2 = parseInt(intNextYear) + 1;

	Cal_HTML = "";
	Cal_HTML += "<div class='calrlayer'>";
	Cal_HTML += "<div class='btm'>";

	Cal_HTML += "   <div class='cbtn'><a href='javascript:doHide();'><img src='/image/btn/btn_closeLayer.gif' alt='달력닫기' /></a></div>";
	Cal_HTML += "   <div class='month'>";
	Cal_HTML += "	    <strong>" + intThisYear + "." + fnDayString(intThisMonth) + "</strong>";
	Cal_HTML += "	    <a href='javascript:Show_Calendar_PopUp(" + intPrevYear2 + "," + intThisMonth + "," + intThisDay + ");'><img src='/image/btn/btn_monthpre_1.gif' class='lt' alt='이전년' /></a>";
	Cal_HTML += "	    <a href='javascript:Show_Calendar_PopUp(" + intPrevYear + "," + intPrevMonth + "," + intThisDay + ");'><img src='/image/btn/btn_monthpre.gif' class='lt1' alt='이전달' /></a>";
	Cal_HTML += "	    <a href='javascript:Show_Calendar_PopUp(" + intNextYear2 + "," + intThisMonth + "," + intThisDay + ");'><img src='/image/btn/btn_monthnext_1.gif' class='ri1' alt='다음년' /></a>";
	Cal_HTML += "	    <a href='javascript:Show_Calendar_PopUp(" + intNextYear + "," + intNextMonth + "," + intThisDay + ");'><img src='/image/btn/btn_monthnext.gif' class='ri' alt='다음달' /></a>";
	Cal_HTML += "   </div>";

	Cal_HTML += "   <table summary='달력입니다.'>";
	Cal_HTML += "       <caption>달력</caption>";
	Cal_HTML += "       <thead>";
	Cal_HTML += "           <tr>";
	Cal_HTML += "	            <th scope='col' class='sun'>일</th>";
	Cal_HTML += "	            <th scope='col'>월</th>";
	Cal_HTML += "	            <th scope='col'>화</th>";
	Cal_HTML += "	            <th scope='col'>수</th>";
	Cal_HTML += "	            <th scope='col'>목</th>";
	Cal_HTML += "	            <th scope='col'>금</th>";
	Cal_HTML += "	            <th scope='col' class='sat'>토</th>";
	Cal_HTML += "           </tr>";
	Cal_HTML += "       </thead>";
	Cal_HTML += "       <tbody>";


	for (intLoopWeek=1; intLoopWeek < 7; intLoopWeek++)
	{						// 주단위 루프 시작, 최대 6주

		Cal_HTML += "<tr>";

		for (intLoopDay=1; intLoopDay <= 7; intLoopDay++)
	    {// 요일단위 루프 시작, 일요일 부터


			if (intThirdWeekday > 0)
			{// 첫주 시작일이 1보다 크면
				Cal_HTML += "<td>";
				intThirdWeekday--;
			}
			else
			{
				if (thirdPrintDay > intLastDay)
				{// 입력 날짜가 월말보다 크다면

					Cal_HTML += "<td>";
				}
				else
				{// 입력날짜가 현재월에 해당 되면
					Cal_HTML += "<td";

					if ( (selYear==0 && selMonth ==0 && selDay ==0 ) && (intThisYear == NowThisYear && intThisMonth == NowThisMonth && thirdPrintDay == intThisDay))
					{// 선택된 날짜가 없고 넘어온 날짜가 오늘 날짜이면
						Cal_HTML += " class='on'";
					}
					if (intThisYear == selYear && intThisMonth == selMonth && thirdPrintDay == selDay)
					{// 넘어온 날짜가 오늘 날짜이면
						Cal_HTML += " class='on'";
					}
					else
					{
					    switch(intLoopDay)
					    {
						    case 1:
							    Cal_HTML += " class='sun'"  // 일요일이면 빨간 색으로

							    break;
						    case 7:
							    Cal_HTML += " class='sat'"  // 토요일이면 파란 색으로

							    break;
						    default:
							    Cal_HTML += " "
							    break;
					    }
					}

					Cal_HTML += "><a href=\"javascript:doClick('"+intThisYear+"-"+fnDayString(intThisMonth).toString()+"-"+fnDayString(thirdPrintDay).toString()+"');\">" + thirdPrintDay + "</a>";
				}

				thirdPrintDay++;

			    // 만약 날짜 값이 월말 값보다 크면 루프문 탈출
				if (thirdPrintDay > intLastDay)
				{
					Stop_Flag = 1;
				}
			}

			Cal_HTML += "</td>";
		}

		Cal_HTML += "</tr>";

		if (Stop_Flag==1)
		    break;
	}

	Cal_HTML += "   </tbody>";
	Cal_HTML += "   </table>";
    Cal_HTML += "</div>";
    Cal_HTML += "</div>";

	calObj.innerHTML = Cal_HTML;
}


// 년 정보를 콤보 박스로 표시
function get_Yearinfo(year,month,day)
{
	var min = parseInt(year) - 1;
	var max = parseInt(year) + 3;
	var i = new Number();
	var str = new String();

	str = "<SELECT onChange='Show_Calendar_PopUp(this.value,"+month+","+day+");' ONMOUSEOVER='javascript:doOver(event);'>";
	for (i=min; i<=max; i++) {
		if (i == parseInt(year)) {
			str += "<OPTION VALUE="+i+" selected ONMOUSEOVER='javascript:doOver(event);'>"+i+"</OPTION>";
		} else {
			str += "<OPTION VALUE="+i+" ONMOUSEOVER='javascript:doOver(event);'>"+i+"</OPTION>";
		}
	}
	str += "</SELECT>";
	return str;
}

// 월 정보를 콤보 박스로 표시
function get_Monthinfo(year,month,day)
{
	var i = new Number();
	var str = new String();

	str = "<SELECT onChange='Show_Calendar_PopUp("+year+",this.value,"+day+");' ONMOUSEOVER='javascript:doOver(event);'>";
	for (i=1; i<=12; i++) {
		if (i == parseInt(month)) {
			str += "<OPTION VALUE="+i+" selected ONMOUSEOVER='javascript:doOver(event);'>"+i+"</OPTION>";
		} else {
			str += "<OPTION VALUE="+i+" ONMOUSEOVER='javascript:doOver(event);'>"+i+"</OPTION>";
		}
	}
	str += "</SELECT>";
	return str;
}


/**
	HTML 개체용 유틸리티 함수
**/
function GetObjectTop(obj)
{
    if(obj != null)
    {
	    if (obj.offsetParent == document.body)
		    return obj.offsetTop;
	    else
		    return obj.offsetTop + GetObjectTop(obj.offsetParent);
    }
    return 0;
}

function GetObjectLeft(obj)
{
    if(obj != null)
    {
	    if (obj.offsetParent == document.body)
		    return obj.offsetLeft;
	    else
		    return obj.offsetLeft + GetObjectLeft(obj.offsetParent);
    }
    return 0;
}



/*
 * Date Format 1.2.3
 * (c) 2007-2009 Steven Levithan <stevenlevithan.com>
 * MIT license
 *
 * Includes enhancements by Scott Trenda <scott.trenda.net>
 * and Kris Kowal <cixar.com/~kris.kowal/>
 *
 * Accepts a date, a mask, or a date and a mask.
 * Returns a formatted version of the given date.
 * The date defaults to the current date/time.
 * The mask defaults to dateFormat.masks.default.
 */

var dateFormat = function () {
	var	token = /d{1,4}|m{1,4}|yy(?:yy)?|([HhMsTt])\1?|[LloSZ]|"[^"]*"|'[^']*'/g,
		timezone = /\b(?:[PMCEA][SDP]T|(?:Pacific|Mountain|Central|Eastern|Atlantic) (?:Standard|Daylight|Prevailing) Time|(?:GMT|UTC)(?:[-+]\d{4})?)\b/g,
		timezoneClip = /[^-+\dA-Z]/g,
		pad = function (val, len) {
			val = String(val);
			len = len || 2;
			while (val.length < len) val = "0" + val;
			return val;
		};

	// Regexes and supporting functions are cached through closure
	return function (date, mask, utc) {
		var dF = dateFormat;

		// You can't provide utc if you skip other args (use the "UTC:" mask prefix)
		if (arguments.length == 1 && Object.prototype.toString.call(date) == "[object String]" && !/\d/.test(date)) {
			mask = date;
			date = undefined;
		}

		// Passing date through Date applies Date.parse, if necessary
		date = date ? new Date(date) : new Date;
		if (isNaN(date)) throw SyntaxError("invalid date");

		mask = String(dF.masks[mask] || mask || dF.masks["default"]);

		// Allow setting the utc argument via the mask
		if (mask.slice(0, 4) == "UTC:") {
			mask = mask.slice(4);
			utc = true;
		}

		var	_ = utc ? "getUTC" : "get",
			d = date[_ + "Date"](),
			D = date[_ + "Day"](),
			m = date[_ + "Month"](),
			y = date[_ + "FullYear"](),
			H = date[_ + "Hours"](),
			M = date[_ + "Minutes"](),
			s = date[_ + "Seconds"](),
			L = date[_ + "Milliseconds"](),
			o = utc ? 0 : date.getTimezoneOffset(),
			flags = {
				d:    d,
				dd:   pad(d),
				ddd:  dF.i18n.dayNames[D],
				dddd: dF.i18n.dayNames[D + 7],
				m:    m + 1,
				mm:   pad(m + 1),
				mmm:  dF.i18n.monthNames[m],
				mmmm: dF.i18n.monthNames[m + 12],
				yy:   String(y).slice(2),
				yyyy: y,
				h:    H % 12 || 12,
				hh:   pad(H % 12 || 12),
				H:    H,
				HH:   pad(H),
				M:    M,
				MM:   pad(M),
				s:    s,
				ss:   pad(s),
				l:    pad(L, 3),
				L:    pad(L > 99 ? Math.round(L / 10) : L),
				t:    H < 12 ? "a"  : "p",
				tt:   H < 12 ? "am" : "pm",
				T:    H < 12 ? "A"  : "P",
				TT:   H < 12 ? "AM" : "PM",
				Z:    utc ? "UTC" : (String(date).match(timezone) || [""]).pop().replace(timezoneClip, ""),
				o:    (o > 0 ? "-" : "+") + pad(Math.floor(Math.abs(o) / 60) * 100 + Math.abs(o) % 60, 4),
				S:    ["th", "st", "nd", "rd"][d % 10 > 3 ? 0 : (d % 100 - d % 10 != 10) * d % 10]
			};

		return mask.replace(token, function ($0) {
			return $0 in flags ? flags[$0] : $0.slice(1, $0.length - 1);
		});
	};
}();

// Some common format strings
dateFormat.masks = {
	"default":      "ddd mmm dd yyyy HH:MM:ss",
	shortDate:      "m/d/yy",
	mediumDate:     "mmm d, yyyy",
	longDate:       "mmmm d, yyyy",
	fullDate:       "dddd, mmmm d, yyyy",
	shortTime:      "h:MM TT",
	mediumTime:     "h:MM:ss TT",
	longTime:       "h:MM:ss TT Z",
	isoDate:        "yyyy-mm-dd",
	isoTime:        "HH:MM:ss",
	isoDateTime:    "yyyy-mm-dd'T'HH:MM:ss",
	isoUtcDateTime: "UTC:yyyy-mm-dd'T'HH:MM:ss'Z'"
};

// Internationalization strings
dateFormat.i18n = {
	dayNames: [
		"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
		"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
	],
	monthNames: [
		"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
		"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"
	]
};

// For convenience...
Date.prototype.format = function (mask, utc) {
	return dateFormat(this, mask, utc);
};

var addDate = function(settings) {
	var config = { now : new Date(), cls : "day", num : 0, format : "isoDate" };
	if (settings) $.extend(config, settings);
	var dt = config.now;
	var rd = new Date();
	switch (config.cls)
	{
		case "month" :
			rd.setFullYear(dt.getFullYear(), dt.getMonth() + config.num, dt.getDate() + 1);
			break;
		case "year" :
			rd.setFullYear(dt.getFullYear() + config.num, dt.getMonth(), dt.getDate() + 1);
			break;
		default :
			rd.setFullYear(dt.getFullYear(), dt.getMonth(), dt.getDate() + 1 + config.num);
			break;
	}

	return rd.format(config.format);
};